JPS6389474U - - Google Patents
Info
- Publication number
- JPS6389474U JPS6389474U JP18472386U JP18472386U JPS6389474U JP S6389474 U JPS6389474 U JP S6389474U JP 18472386 U JP18472386 U JP 18472386U JP 18472386 U JP18472386 U JP 18472386U JP S6389474 U JPS6389474 U JP S6389474U
- Authority
- JP
- Japan
- Prior art keywords
- working chamber
- liquid
- pilot
- electric pulse
- output shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims 7
- 238000007599 discharging Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Servomotors (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Description
第１図は本考案の一実施例を示すデジタル制御
方向制御弁の縦断面図、第２図は第１図の線―
に沿つた断面図、第３図は本考案の一実施例弁
の記号図である。
１……弁本体、３……主スプール、６……第１
作用室、７……第２作用室、８……パイロツトス
プール、１２，１３……絞り、１８……電気パル
スモータ、１９……カム部材、２１……ねじりば
ね、Ｖ……バルブ機構。
Fig. 1 is a longitudinal sectional view of a digitally controlled directional control valve showing an embodiment of the present invention, and Fig. 2 is a line taken along the line of Fig. 1.
FIG. 3 is a symbolic diagram of a valve according to an embodiment of the present invention. 1... Valve body, 3... Main spool, 6... First
Action chamber, 7... Second action chamber, 8... Pilot spool, 12, 13... Throttle, 18... Electric pulse motor, 19... Cam member, 21... Torsion spring, V... Valve mechanism.
Claims (1)
により液体の流れ方向を制御するように設けた主
スプールと、主スプール内へ摺動自在に嵌挿して
軸方向への移動により主スプール端に形成の第１
作用室へパイロツト液体を導入したり第１作用室
の液体を排出したりするバルブ機構を設けるパイ
ロツトスプールと、電気パルス信号に応じて正逆
回転する電気パルスモータと、電気パルスモータ
の出力軸と連結して出力軸の回転に応じてパイロ
ツトスプールを軸方向への目標位置に移動する移
動機構と、ばねの弾性力を電気パルスモータの出
力軸へ付与して電気パルス信号による出力軸の回
転を原位置に復帰作用する中立位置保持装置と、
主スプール端に第１作用室と対向形成して前記バ
ルブ機構に供給するパイロツト液体の一部を導入
する第２作用室とを備え、バルブ機構に供給する
パイロツト液体の圧力より第２作用室の液体圧力
を減圧制御するように第２作用室へパイロツト液
体を絞りを介して導入すると共に第２作用室の液
体を絞りを介して排出可能に設けて成るデジタル
制御方向制御弁。 A main spool is provided that is slidably inserted into the valve body and controlled by moving in the axial direction. The first formed on the spool end
A pilot spool is provided with a valve mechanism for introducing pilot liquid into the working chamber and discharging liquid from the first working chamber, an electric pulse motor that rotates in forward and reverse directions according to electric pulse signals, and an output shaft of the electric pulse motor. A moving mechanism that connects to move the pilot spool to a target position in the axial direction according to the rotation of the output shaft, and a spring that applies elastic force to the output shaft of the electric pulse motor to rotate the output shaft using electric pulse signals. a neutral position holding device that functions to return to the original position;
A second working chamber is formed at the end of the main spool to face the first working chamber and introduce a part of the pilot liquid to be supplied to the valve mechanism, and the pressure of the pilot liquid to be supplied to the valve mechanism causes the second working chamber to be A digitally controlled directional control valve which is configured to introduce a pilot liquid into a second working chamber through a throttle and to discharge liquid from the second working chamber through a restrictor so as to reduce the liquid pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986184723U JPH0443604Y2 (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986184723U JPH0443604Y2 (en) | 1986-11-28 | 1986-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6389474U true JPS6389474U (en) | 1988-06-10 |
| JPH0443604Y2 JPH0443604Y2 (en) | 1992-10-15 |
Family
ID=31132668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986184723U Expired JPH0443604Y2 (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0443604Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011256993A (en) * | 2010-06-11 | 2011-12-22 | Nabtesco Corp | Electric actuator for operating directional selector valve, and multiple directional selector valve equipped with the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4989923A (en) * | 1972-12-29 | 1974-08-28 |
-
1986
- 1986-11-28 JP JP1986184723U patent/JPH0443604Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4989923A (en) * | 1972-12-29 | 1974-08-28 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011256993A (en) * | 2010-06-11 | 2011-12-22 | Nabtesco Corp | Electric actuator for operating directional selector valve, and multiple directional selector valve equipped with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0443604Y2 (en) | 1992-10-15 |
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